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China NB N7 承压设备用镍及镍合金无缝管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: N7 / N7
Category Grade Standard Region/Area Standard Content
Metals N7 NB/T 47047 China 承压设备用镍及镍合金无缝管

Chemical composition(mass fraction)(wt.%) of the N7

Element Min Max Similar
Ni 99.0000 - -
Cu - 0.2500 -
Fe - 0.4000 -
Mn - 0.3500 -
C - 0.1500 -
Si - 0.3500 -
S - 0.0080 -

Mechanical Properties of steel grade N7

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
425 (≥) 341 (≥) 11 11 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 214

Physical Properties of steel grade N7

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
31 - -     0.14 -  
992 915 - 23.3 244   -  
891 - 23 43.2   224 243

Heat Treatment of steel grade N7

Heat treated : 1232°C - 1833°C

Technological Curves of steel grade N7

Cross Reference Table (Equivalent Grade) of N7

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